Question regarding media-breakpoint-between

Created by: ksrb

I was trying out @media-breakpoint-between but it doesn't behave the way I expected.

Given:

@include media-breakpoint-between(sm, md) {
  div {
    background: tomato;
  }
}

Actual:

@media (min-width: 576px) and (max-width: 991px) {
  div {
    background: tomato;
  }
}

Expected:

@media (min-width: 576px) and (max-width: 768px) {
  div {
    background: tomato;
  }
}

Example with extracted code in sassmeister.

Respective files: